| Quantitatively determine the dominant driving factors of the spatial–temporal changes of vegetation NPP in the Hengduan Mountain area during 2000-2015 |
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| 作者姓名： | CHEN Shu-ting GUO Bing ZHANG Rui ZANG Wen-qian WEI Cui-xia WU Hong-wei YANG Xiao ZHEN Xiao-yan LI Xing ZHANG Da-fu HAN Bao-min ZHANG Hai-ling |
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| 作者单位： | School of Civil Architectural Engineering;State Key Laboratory of Resources and Environmental Information System;Key Laboratory of Land use;Key Laboratory for Digital Land and Resources of Jiangxi Province;Key Laboratory of National Geographic Census and Monitoring;Aerospace Information Research Institute;Key Laboratory of UrbanLand Resources Monitoring and Simulation;Key Laboratory of Meteorology and Ecological Environment of Hebei Province;Land Satellite Remote Sensing Application Center;College of Geological Engineering and Geomatics |
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| 基金项目： | supported by the Open fund of Key Laboratory of National Geographic Census and Monitoring,MNR(grant no.2020NGCM02);Open Research Fund of the Key Laboratory of Digital Earth Science,Chinese Academy of Sciences(grant no.2019LDE006);the Open Fund of Key Laboratory of Urban Land Resources Monitoring and Simulation,Ministry of Natural Resources(grant no.KF-2020-05001);Open fund of Key Laboratory of Land use,Ministry of Natural Resources(grant no.20201511835);Open Fund of Key Laboratory for Digital Land and Resources of Jiangxi Province,East China University of Technology(grant no.DLLJ202002);Open foundation of MOE Key Laboratory of Western China’s Environmental Systems,Lanzhou University and the fundamental Research funds for the Central Universities(grant no.lzujbky-2020-kb01);University-Industry Collaborative Education Program(grant no.201902208005);Open Fund of Key Laboratory of Meteorology and Ecological Environment of Hebei Province(grant no.Z202001H);Open Fund of Key Laboratory of Geomatics and Digital Technology of Shandong Province;Open Fund of Key Laboratory of Geomatics Technology and Application Key Laboratory of Qinghai Province(grant no.QHDX-2019-04);Natural Science Foundation of Shandong Province(grant no.ZR2018BD001)。 |
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| 摘 要： | The Hengduan mountain area,located in the upper reaches of the Yangtze River of China,is an important ecological barrier that significantly impacts the climate and ecological environment of the surrounding region and western China as a whole.This paper introduces the gravity center model used to analyze the spatial-temporal variation patterns of vegetation Net Primary Productivity(NPP)from 2000 to 2015,which were determined by the use of MOD17 A3 NPP products.Additionally,the dominant driving factors of the spatial–temporal changes of vegetation NPP of the Hengduan Mountain area were quantitatively determined with a geographical detector over 2000-2015.The results revealed that:(1)From 2000 to 2015,there was an increasing trend of vegetation NPP in the Hengduan mountain area.Throughout the whole study region,the vegetation NPP with a mean value of 611.37 gC·m-2·a-1 indicated a decreasing trend from southeast to northwest in terms of spatial distribution.(2)The gravity centers of vegetation NPP in 2000-2015 were mainly concentrated in Zhongdian County.During the study period,the gravity center of vegetation NPP moved northward,which indicated that the increment and increasing rate of vegetation NPP in the northern parts were greater than that of the southern areas.(3)The vegetation NPP showed a moderately positive correlation with temperature,accumulated temperature(>10℃),and sunshine,while there was an overall negative relationship between NPP and precipitation.(4)The dominant factors and interactive dominant factors changed in different subregions over different segments of the study period.The dominant factors of most sub-regions in Hengduan mountain were natural factors,and the climate change factors played an increasingly greater role over the 16 years of the study period.
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| 关 键 词： | Vegetation NPP Spatial-temporal distribution Driving factors Geographic detector Land use change |
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